This bulletin was written by David Weinbrenner , Co-Manager - Washington Washington Volcanic Ash Advisory Center (VAAC) and Project Leader for SDMs. The Volcanic Ash Forecast Transport and Dispersion model (VAFTAD) was unofficially implemented on the NCEP Cray computer system March 29, 1999 for the VAAC. It is being implemented on a new computer system. The purpose of this bulletin is to acquaint users to the project. For full document, the user should contact the VAAC.
Sample products can be found at http://www.alaska.net/~aawu/vaac.html